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Lots of Pop up ads and very slow system

My son is in cyber school and had a computer provided for him. It is his first computer and despite our warnings about not clicking on unknown things, I believe he has downloaded some undesirable things, because he clicked on what looked to him to be legitimate warning messages. Now he has ads popping up where they definately should not be and his computer is excessively slow to start.

I used you before for my computer and you all are amazing! Please help with my son's computer. Thanks!

I would like to welcome you to the Malware Removal section of the forum.

Around here they call me Gringo and I will be glad to help you with your malware problems.

Very Important --> Please read this post completely, I have spent my time to put together somethings for you to keep in mind while I am helping you to make things go easier, faster and smoother for both of us!

Please do not run any tools unless instructed to do so.

We ask you to run different tools in a specific order to ensure the malware is completely removed from your machine, and running any additional tools may detect false positives, interfere with our tools, or cause unforeseen damage or system instability.

Please do not attach logs or use code boxes, just copy and paste the text.

Due to the high volume of logs we receive it helps to receive everything in the same format, and code boxes make the logs very difficult to read. Also, attachments require us to download and open the reports when it is easier to just read the reports in your post.

Please read every post completely before doing anything.

Pay special attention to the NOTE: lines, these entries identify an individual issue or important step in the cleanup process.

Please provide feedback about your experience as we go.

A short statement describing how the computer is working helps us understand where to go next, for example: I am still getting redirected, the computer is running normally, etc. Please do not describe the computer as "the same", this requires the extra step of looking back at your previous post.

NOTE: At the top of your post, click on the "Follow This Topic" Button, make sure that the "Receive notification" box is checked and that it is set to "Instantly" - This will send you an e-mail as soon as I reply to your topic, allowing us to resolve the issue faster.

NOTE: Backup any files that cannot be replaced. Removing malware can be unpredictable and this step can save a lot of heartaches if things don't go as planed. You can put them on a CD/DVD, external drive or a pen drive, anywhere except on the computer.

NOTE: It is good practice to copy and paste the instructions into notepad and print them in case it is necessary for you to go offline during the cleanup process. To open notepad, navigate to Start Menu > All Programs > Accessories > Notepad. Please remember to copy the entire post so you do not miss any instructions.

These are the programs I would like you to run next, if you have any problems with one of these just skip it and move on to the next one.

1. I ran it and at the end there was a pop up message. I tried to copy it so I could paste it in for you, but it disappeared. Since the junkware saves its results file to the desktop, I ran it again to try to get the message. The message appeared again, I hand wrote it down to type in. But, I cannot find the first junkware scan. I have the second one, which deleted a few more things, actually. But the first one was a bit longer, but not much.

2. Here is the message that popped up that I transcribed for you:

cmd.exe - Corrupt file

the file on directory C:\Users\PACyber\AppData\Local\Microsoft\Windows|Temporary Internet Files\Content.IES\CJOHZWMG (G or 6, not sure from my notes) is corrupt and unreadable. Please run the Chkdsk utility.

I tried to run combofix, but it would never get past "Attempting to create new system Restore Point"

I turned off the firewall. I could not find any anti-virus software to turn off or malware. There is Malwarebytes on it, but the freeware and according to the directions in your instructions above, only the registered version needs to be turned off.